2 # Copyright (c) 2016 Cisco and/or its affiliates.
3 # Licensed under the Apache License, Version 2.0 (the "License");
4 # you may not use this file except in compliance with the License.
5 # You may obtain a copy of the License at:
7 # http://www.apache.org/licenses/LICENSE-2.0
9 # Unless required by applicable law or agreed to in writing, software
10 # distributed under the License is distributed on an "AS IS" BASIS,
11 # WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 # See the License for the specific language governing permissions and
13 # limitations under the License.
15 """Traffic script that sends an IP ICMPv4/ICMPv6 packet
16 from one interface to the other one."""
21 from scapy.layers.inet import ICMP, IP
22 from scapy.all import Ether
23 from scapy.layers.inet6 import ICMPv6EchoRequest
24 from scapy.layers.inet6 import IPv6
26 from resources.libraries.python.PacketVerifier import RxQueue, TxQueue
27 from resources.libraries.python.TrafficScriptArg import TrafficScriptArg
31 """Check if IP address has the correct IPv4 address format.
33 :param ip: IP address.
35 :return: True in case of correct IPv4 address format,
36 otherwise return false.
40 ipaddress.IPv4Address(unicode(ip))
42 except (AttributeError, ipaddress.AddressValueError):
47 """Check if IP address has the correct IPv6 address format.
49 :param ip: IP address.
51 :return: True in case of correct IPv6 address format,
52 otherwise return false.
56 ipaddress.IPv6Address(unicode(ip))
58 except (AttributeError, ipaddress.AddressValueError):
63 """Send IP ICMPv4/ICMPv6 packet from one traffic generator interface to
66 args = TrafficScriptArg(['src_mac', 'dst_mac', 'src_ip', 'dst_ip'])
68 src_mac = args.get_arg('src_mac')
69 dst_mac = args.get_arg('dst_mac')
70 src_ip = args.get_arg('src_ip')
71 dst_ip = args.get_arg('dst_ip')
72 tx_if = args.get_arg('tx_if')
73 rx_if = args.get_arg('rx_if')
81 # Create empty ip ICMP packet and add padding before sending
82 if valid_ipv4(src_ip) and valid_ipv4(dst_ip):
83 pkt_raw = (Ether(src=src_mac, dst=dst_mac) /
84 IP(src=src_ip, dst=dst_ip) /
88 elif valid_ipv6(src_ip) and valid_ipv6(dst_ip):
89 pkt_raw = (Ether(src=src_mac, dst=dst_mac) /
90 IPv6(src=src_ip, dst=dst_ip) /
93 icmp_format = 'ICMPv6EchoRequest'
95 raise ValueError("IP(s) not in correct format")
97 # Send created packet on one interface and receive on the other
98 sent_packets.append(pkt_raw)
103 # Check whether received packet contains layers Ether, IP and ICMP
105 raise RuntimeError('ICMP echo Rx timeout')
107 if not ether.haslayer(ip_format):
108 raise RuntimeError('Not an IP packet received {0}'
109 .format(ether.__repr__()))
111 if not ether.haslayer(icmp_format):
112 raise RuntimeError('Not an ICMP packet received {0}'
113 .format(ether.__repr__()))
117 if __name__ == "__main__":